my favorite dorky Literary Preservationist

I have a question for readers of The Company series by Kage Baker. Can anybody tell me approximately when Lewis would have been born or made an "employee" of Dr. Zeus? I was reading Sappho’s poetry recently and I’m thinking of writing a fic where they meet. (They’re a perfect combination! We have only bits and pieces of Sappho’s poetry, so Lewis could have been sent to get copies of her completed poems before they became fragmented!)